I have a 100 gallon that also had creeping tin levels (assuming from the new pvc or glass). I used 1 cup of ROX 0.8, changed every two weeks for 2 months, plus two 25% water changes. Triton now reports my tin level at zero.
Also I continue to run ROX, just changed less frequently. No ill effects in livestock so far. If anything things are much happier.
Also I continue to run ROX, just changed less frequently. No ill effects in livestock so far. If anything things are much happier.
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